Relay Outputs; Screwing The Sensor Into The Dosing Head - Grundfos DMX 24-8 Installation And Operating Instructions Manual

DMX model 226 en

7.2.5 Relay Outputs

R
C
+
-
1 1 1 1
K1 K2 K3 K4
L N PE PE
230 V AC /
115 V AC

7.2.6 Screwing the Sensor into the Dosing Head

V6.0
NOTE
Interference suppression is required for inductive loads (also relays and contactors).
If this is not possible, protect the relay contacts using a suppressor circuit as
described below.
With AC voltage:
Current up to Capacitor C
60 mA
70 mA
150 mA
1.0 A
With DC voltage: connect freewheeling diode parallel to relay or contactor.
CAUTION
NOTE
S1
1 1 1
K5 K6 K7
N
contakt 1
(non-floating
230 V AC / 115 V AC)
Screw in the sensor from the lower side into the hole of the dosing head
flange (M14 x 1.5).
Now the diaphragm breakage indication is ready for start-up.
The relay output connection depends on the
application and the connected actuators.
Resistor R
390 Ω 2 W
10 nF 260 V
22 Ω 2 W
47 nF 260 V
47 Ω 2 W
100 nF 260 V
47 Ω 2 W
220 nF 260 V
Provide relay outputs on site with an appropriate
backup fuse!
These connections depend on the type of actuator
used, and should only be understood as guidelines.
Refer to actuator documentation.
S2
1 1 1
K8 K9 K10
green yellow
contakt 2 (floating)
1 1 1
white
sensor
27